Literature DB >> 8295433

Implications of the dielectrical behaviour of human blood for continuous online measurement of haematocrit.

P M de Vries1, J W Langendijk, P M Kouw, V Visser, H Schneider.   

Abstract

A study was designed to explore the possibility of detecting the haematocrit of blood by means of admittance measurements. The admittance and phase angle of blood kept in a measuring cell were determined at various frequencies between 60 kHz and 24 MHz. A reliable and accurate estimation of haematocrit was obtained in two ways. First, low-frequency admittance, high-frequency admittance and a factor x, which was the conductive percentage of cell content, were used. Secondly, the maximum phase angle was used. Both methods can be applied to obtain continuous on-line information about haematocrit for blood volume control during haemodialysis.

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Year:  1993        PMID： 8295433     DOI： 10.1007/BF02441978

Source DB:  PubMed          Journal:  Med Biol Eng Comput        ISSN： 0140-0118            Impact factor:   2.602


  9 in total

1.  Observations on blood flow related electrical impedance changes in rigid tubes.

Authors:  K R Visser; R Lamberts; H H Korsten; W G Zijlstra
Journal:  Pflugers Arch       Date:  1976-11-05       Impact factor: 3.657

2.  [The relation between the density of blood and the arterial pressure in animal experiments and in patients during hemodialysis (author's transl)].

Authors:  T Kenner; H Hinghofer-Szalkay; H Leopold; H Pogglitsch
Journal:  Z Kardiol       Date:  1977-07

3.  Measurement of transcellular fluid shift during haemodialysis. Part 1. Method.

Authors:  J H Meijer; P M de Vries; H G Goovaerts; P L Oe; A J Donker; H Schneider
Journal:  Med Biol Eng Comput       Date:  1989-03       Impact factor: 2.602

4.  Influence of erythrocyte veloicty on impedance plethysmographic measurements.

Authors:  R A Peura; B C Penney; J Arcuri; F A Anderson; H B Wheeler
Journal:  Med Biol Eng Comput       Date:  1978-03       Impact factor: 2.602

5.  Blood volume changes and hypotension during hemodialysis.

Authors:  K E Kim; M Neff; B Cohen; M Somerstein; J Chinitz; G Onesti; C Swartz
Journal:  Trans Am Soc Artif Intern Organs       Date:  1970

6.  Changes in blood parameters during hemodialysis as determined by conductivity measurements.

Authors:  P M de Vries; P M Kouw; J H Meijer; L P Oe; H Schneider; A J Donker
Journal:  ASAIO Trans       Date:  1988 Jul-Sep

7.  Fluid volume monitoring with electrical impedance technique during hemodialysis.

Authors:  B Tedner; L E Lins
Journal:  Artif Organs       Date:  1984-02       Impact factor: 3.094

8.  Serial blood water estimations and in-line blood viscometry: the continuous measurement of blood volume during dialysis procedures.

Authors:  R N Greenwood; C Aldridge; W R Cattell
Journal:  Clin Sci (Lond)       Date:  1984-05       Impact factor: 6.124

9.  Impedance of skeletal muscle from 1 Hz to 1 MHz.

Authors:  E Zheng; S Shao; J G Webster
Journal:  IEEE Trans Biomed Eng       Date:  1984-06       Impact factor: 4.538
  9 in total
  4 in total

1.  Investigation into the effects of haematocrit and temperature on the resistivity of mammalian blood using a four-electrode probe.

Authors:  S C Tjin; T Xie; Y Z Lam
Journal:  Med Biol Eng Comput       Date:  1998-07       Impact factor: 2.602

2.  Continuous measurements by impedance of haematocrit and plasma volume variations during dialysis.

Authors:  M Maasrani; M Y Jaffrin; B Boudailliez
Journal:  Med Biol Eng Comput       Date:  1997-05       Impact factor: 2.602

3.  Dependence of anisotropic myocardial electrical resistivity on cardiac phase and excitation frequency.

Authors:  P Steendijk; E T van der Velde; J Baan
Journal:  Basic Res Cardiol       Date:  1994 Sep-Oct       Impact factor: 17.165

4.  Real-time electrical impedimetric monitoring of blood coagulation process under temperature and hematocrit variations conducted in a microfluidic chip.

Authors:  Kin Fong Lei; Kuan-Hao Chen; Po-Hsiang Tsui; Ngan-Ming Tsang
Journal:  PLoS One       Date:  2013-10-07       Impact factor: 3.240
  4 in total

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